Dial mechanism for radio apparatus



Dec. 27, 1927. ,653,875 W. A. READY AUZZ/ by hwo aU/y.

ZUOLLOGJITL JZ. Read; V

Patented. Dec. 27, 1927.

PATEN OFF WILLIAM A. READY, OFBROOKL INE, MASSACHUSETTS.

ICE.

DIAL MEGL'LANISM FOR name APPARATUS.

Application filed December 27, 1926. Serial No. 157,068.

My invention aims to provide improvements in a dial mechanism for radio apparatus and relates more particularly to a dialmechanism having a cover plate secured to the panel of a radio device and a cap secured to the cover plate to conceal a hub projecting through an opening in the cover plate.

The claims inthis application are directed to the invention referred to above and reference is hereby made of my co-pending application, Serial No. 95,154, filed March 16,

1926, which application contains generic claims.

The invention consists in a dial mechanism for a radio apparatus as set forth in the following specification and particularly as pointed out in the claims thereof.-

Referring to the drawings:

Figure 1 represents a front elevation of a dial mechanism embodying my invention.v

Fig. 2 is a partial side elevation and partial central vertical section of the dial mechanism. 4

Fig. 3 is a perspective View of the cap.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 5 represents a front panel of a radio apparatus and 6 represents a rotor or dial shaft of a radio condenser, saidshaft preferably having a shouldered portion 7 which projects through an opening provided therefor in the panel-5.

A disc 8, preferably formed of thin sheet material, has a hub portion 9 rigidly fastened thereto in any suitable manner, and said hub portion is rigidly secured to the shouldered portion 7 of the shaft 6. by a set screw 10. An indicating dial of sheet material is secured in any suitable manner" to the front face of the disc'8, and said dial is provided with tuning indicia 12 consisting of suitable graduations and reference characters.

A cover plate 13 is located in'front of the disc 8 and dial 11 and is fastened to the front face of the panel 5 by suitable screws 14:. An opening 15 extends through the cover plate 13, and a recess 16 is also provided in the front face of said cover plate in alignment with the opening 15. The hub portion 9 of the disc 8 projects through the opening 15 of the cover plate 13 and into and through the recess 16 thereof, in order that access may be had to the screw 10. The end portion 7 of the shaft 6 and that portion of the hub 9 whicliffprojects through the cover plate 13 is concealed by a cap 17 which is adapted to be forced into the recess 16, a flange 18 of said cap frictipnally engaging the wall of said recess. A lurality of slots 19 are provided in the flange 18 thereby permitting said flange to yield when the cap is forced into the recess 16.

An aperture 20 is provided at the top of the cover plate 13 and the tuning indicia upon the, dial 11 are visible th ough this aperture.

The disc 8, carrying the dial 11, is rotated in a well-known manner by an operat' ing knob 21.

The mechanism as illustrated and described provides a very simple and practical construction which may be very quickly assembled or dismounted, and that portion of the device which projects through the cover plate 13 is concealed from view by the cap 17 which is preferabl formed in an ornamental manner, there y adding to the attractlveness of the device. The cap 17, furthermore, may be easily and quickly inserted within the recess 16 of the cover plate 17 or removed therefrom without the aid of tools. t

lVhile I have shown and described a prefcrred embodiment of my invention, I do not wish to be limited thereto, my invention being best defined in the following claims ing indicia thereon, a cover plate for said disc, a hub portion of said disc projecting through said cover plate, and a cap secured directly to said cover plate and concealing that portion of the mechanism which projects through said plate.

2 A dial mechanism for a radio apparatus having a panel androtatable shaft extending therethrough, a disc fast to said shaft, a dial upon said disc, a cover plate for said dial fast to saidpanel, a hub portion of said disc projecting through said cover plate, and a cap secured to said cover plate only, and positioned in front of said hub.

31A dial mechanism for a radio ap aratus'having a panel and rotatable sha tending therethrough, a discfast to said shaft, a dial upon said disc, a cover plate for said dial fast to said panel and rovided with'a recess in the front thereo a hub portion of said disc projecting through said cover plate and into said recess, and a cap cap secured directly to said coyer plate to fast directly to said cover plate within said conceal said hub, said cap permitting access recess and concealing said hub. to said hub when removed. 10

4, A dial mechanism for use in connection In testimony whereof I have hereunto set 5 with radio apparatus, said dial mechanism my hand.

including a cover plate, a hub extending from an opening in said cover plate and 0. WILLIAM A. READY. 

